Thought this might be of interest. I get the sense it might be the first of a series. <div><br></div><div><div><a href="https://herreshoff.org/2022/01/building-an-hmco-steam-engine-intro/">https://herreshoff.org/2022/01/building-an-hmco-steam-engine-intro/</a></div><br></div><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><span style="color:rgb(102,102,102)"><br>Dave</span><br></div>